Use the following to answer the questions below:
The Math and Verbal SAT scores for a random sample of 10 students from a large introductory statistics course are provided.

-Construct a 90% confidence interval for the difference in mean Math and Verbal SAT scores for students in the class. Use two decimal places in your margin of error.
A) -5.95 to 87.95
B) -9.20 to 91.20
C) -10.13 to 92.13
D) -8.439 to 90.44

Question

Use the following to answer the questions below:
The Math and Verbal SAT scores for a random sample of 10 students from a large introductory statistics course are provided.
 
-Construct a 90% confidence interval for the difference in mean Math and Verbal SAT scores for students in the class. Use two decimal places in your margin of error.
A) -5.95 to 87.95 
B) -9.20 to 91.20 
C) -10.13 to 92.13 
D) -8.439 to 90.44

Quizplus · Accepted Answer

n = 10, so df = 9 and thus t* = 1.833.
41 ± 1.833 11eeb2d3_8e0f_8770_b9aa_25ca4692b1d7_TBW1049_00 
41 ± 1.833(25.614)
41 ± 46.95
-5.95 to 87.95

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